The Next Generation

RCC Leadership Development

Santiago Peralta

Captain Santiago Peralta is obtaining his M.Ed. in Leadership and Organization Performance at the Vanderbilt University Peabody College while on active duty, and he has been selected to perform an internship with RCC. Captain Peralta helped lead the economic analysis project with our Project Pyramid team, and traveled to Guatemala along with Ben Li to learn how RCC engages with centers abroad.


He also traveled to MD Anderson Cancer Center and UT-Southwestern to learn how high-income country academic institutions share interest in helping underserved populations and work to develop transformative technologies to address shortcomings in cancer care.

RCC Performance Manager,


RCC Outreach & Development

David Martinez, MD

Director of Education & Training in Latin America

David Martinez, originally from Colombia, studied medicine at Fundación Universitaria San Martín - Sabaneta. He is currently a radiation oncology resident training at Oncosalud/AUNA - Universidad Peruana Cayetano Heredia in Lima, Peru. He is passionate about health services and implementation science with a focus on understanding the potential for collaboration. He focuses on connectivity and networking to address access gaps in radiation oncology care in Latin America as part of the solution to the growing burden of cancer globally.


His training expertise comprehends Brachytherapy, hypofractionation techniques (SRS and SBRT), intraoperative radiotherapy, translational and clinical research. He is also involved in ongoing prospective and retrospective studies aimed at improving patient and clinical outcomes. David is a member of multiple scientific societies, including ASTRO, ESTRO, ABS, ESR, RSNA, ESOI and ALATRO.

Katie Lichter

Director of Education & Training in Africa

Katie is a current MD/MPH student with a background in business analytics and program management in Central America and East Africa. Katie is passionate about utilizing healthcare technology to address disparities in oncology and create sustainable, scalable solutions. Prior to attending medical school at Loyola University, Katie helped launch an e-commerce company in Nairobi, Kenya focused on the “last-mile distribution” of essential medical goods. In addition, she has previous  experience working in Central America managing medical and public health brigades with an NGO, Global Brigades. During her time in medical school, she attended Johns Hopkins and completed a Master’s in Public Health degree focused in epidemiology, biostatistics, and health disparities. 


Katie is looking forward to training as a resident in radiation oncology at the University of California San Francisco in 2021 after completing her medicine internship at St. Mary’s Medical Center this year. She is currently a member of ABS, ASTRO, and Physicians for a National Health Program.

Layth Mula-Hussain

Director of Education & Training in the Middle East

Dr. Layth "Yahya Ibrahim" Mula-Hussain is a board-certified radiation oncology physician with interest in academia and global cancer control. Born and raised in Mosul, he completed residency in radiation oncology at the King Hussein Cancer Center, MSc in advanced oncology at Ulm University, and fellowships in radiation oncology at the Tom Baker Cancer Center and the Cross Cancer Institute. 


He was the the first Middle-Eastern ESTRO Fellow in 2011 and the Founding Chairman of the first radiation oncology residency board-program in Kurdistan - Iraq in 2013 through 2017. He also served as the Chairman of the Best of ASTRO meetings and the Multi-Disciplinary Oncology Courses in Iraq in 2015 - 2017. Beside this, he acted as an Expert within the imPACT IAEA team in Pakistan in 2013, as a trainer in the (Awareness Without Borders) campaign in Sudan in 2016, and served as a member at the ASCO International Affairs Steering Committee from 2016 - 2019. 


In 2017, he moved to Canada where he established (Together for Cancer Control)  and later on, joined (Rayos Contra Cancer - RCC) in 2018 as Member of its BOD and being a Director of Education And Training for MENA region at RCC by 2020 to date.

RCC Ambassadors

Maria Caicedo, MD

Maria Caicedo graduated and received her medical degree from La Universidad del Rosario in Bogota, Colombia. She is intensely dedicated to improve cancer care for patients across Latin America. She hopes to bridge existing interest for collaboration in the U.S. with opportunities for development in Colombia and other Latin American countries, especially in areas of need. Her passion is pediatric oncology, where there is a great need for development. 


She is an aspiring radiation oncologist and currently helps bridge development efforts across education, training, and research for global health radiation oncology.

RCC Ambassador,

Jickson Flores, MD

Jickson Flores is a radiation oncologist from the Philippines. The current status and the needs of low and middle income countries like the Philippines is vital in achieving comprehensive analysis and planning in Global Health in Radiation Oncology.


Taking part with these projects will explore more opportunities in Asia especially LMIC in terms of education, training and research in order to ensure safe and quality radiation treatment for all our cancer patients.

RCC Ambassador,

RCC ECHO Coordinators

Megan McLeod, BA

Megan McLeod is a Vanderbilt medical student with a B.A. in Biology and Thesis in Telemedicine. She is a graduate of the University of Mississippi and aspires to develop innovative programs to address health disparities nationally and abroad.

She has led the implementation of the SBRT & SRS curriculum in Latin America, is a medical student representative of the American Medical Association, and is involved in a new HDR-Brachytherapy curriculum that is launching across nine regional centers in developing countries.

ECHO Coordinator, Nashville

Michael Hermansen, PhD

Michael Hermansen is a medical physics resident at Banner MD Anderson Cancer Center in Gilbert, Arizona with a PhD in Medical Physics. He is a graduate of the University of Florida, is fluent in Spanish, and hopes to help cancer patients in developing countries realize better access to affordable, timely, and high quality radiation treatment. He feels privileged to work with like-minded colleagues both domestic and abroad.

He has helped design and implement the SBRT & SRS curriculum in Latin America, and is helping to scale more educational and research programs through RCC collaborations. He is an active member of Medical Physicists for World Benefit.

ECHO Coordinator, Phoenix

Jeremy "Britt" Hatcher, BA


Britt Hatcher is a Vanderbilt medical student with a B.A. in Astrophysics. He graduated from Vanderbilt University and is driven to bring healing through compassion and outreach.

He is helping to lead RCC's newest HDR-Brachytherapy curriculum and serves as a liaison between LMIC clinics and RCC educators.

ECHO Coordinator, Nashville

David Bruss, BS

David Bruss is a medical student at California Northstate University College of Medicine with a B.S. in Human Biology from the University of Southern California and an M.S. in Global Medicine at Keck School of Medicine of USC.


He has an interest in global medicine and aspires to improve the health of individuals and communities globally, particularly in the field of Otolaryngology. His work with RCC has involved forming partnerships with radiation oncologists and otolaryngologists in Ecuador in order to implement curriculums that cater to the needs of the community.


Benjin Facer, BA


Benjin Facer is a Vanderbilt medical student with a B.S. in Biophysics. He graduated from Brigham Young University and is driven to bring healing through compassion and outreach. Prior to medical school, he spent 2 years with Latino populations in Houston, TX as a missionary for the Church of Jesus Christ of Latter-day Saints.


He is helping to lead regional needs assessments in Latin America for radiation therapists (known as "tecnólogos médicos"), and coordinating new efforts amongst radiation therapist volunteers in the United States.

RCC-Vanderbilt Chapter,

Claire Lo, BA


Claire Lo graduated from Harvard University with a B.A. in Human and Evolutionary Biology and is currently a medical student at Vanderbilt University. 

She has provided invaluable research support for efforts related to telehealth education and measuring the impact of remote training, in hopes of improving the way we deliver and design remote healthcare collaborations.

RCC-Vanderbilt Chapter,

Ramsey Timmerman, BS

Ramsey Timmerman received duel undergraduate degrees in Genetics & Biotechnology as well as Finance from the University of Texas at Austin. While he was in Austin, he worked in the Whiteley Microbiology Lab as well as the Juenger Plant Genetics & Biofuel Lab. After graduation, he worked as an investment banking analyst in the Merrill Lynch Technology M&A group in Palo Alto, CA.


He currently works as a research assistant at the University of Texas Southwestern while concurrently providing research project support for Rayos Contra Cancer. He is assisting project growth for SBRT & SRS education as well as the design of research projects pertaining to artificial intelligence to enhance clinic performance in resource-limited settings.


Hannah Rees, BS

Hannah Rees is a medical student at UCSF. She graduated from Yale University as a Global Health Studies Scholar with a BS in Molecular, Cellular, and Developmental Biology in 2018. The following year she worked as an Associate Program Officer at Pharos Global Health Advisors, a non-profit, global health policy advisory organization based in Boston. 


She is currently working on the RCC head and neck contouring curriculum project, which will be piloted this year at seven medical centers in the Philippines. Her passion lies in addressing global disparities in cancer outcomes and access to care. 

RCC-UCSF Chapter,
San Francisco

Kekoa Taparra, PhD

Kekoa Taparra is graduating medical student at the Mayo Clinic Alix School of Medicine who will continue residency in Radiation Oncology at Stanford University. He completed his undergraduate studies at Fairfield University in Biology and Psychology. His graduate work was completed at Johns Hopkins University School of Medicine in the Cellular and Molecular Medicine PhD program in the Department of Radiation Oncology under the mentorship of Dr. Phuoc Tran MD PhD.


As an indigenous kānaka ʻōiwi (Native Hawaiian) born and raised on Oʻahu, HI, he has a mission of delivering high quality cancer care back home in the islands as well as the greater Pacific. His role with Rayos Contra Cancer has focused on coordinating with physicians across the country to assist with the Head and Neck Contouring Curriculum project, which will be implemented in multiple cancer centers in the Philippines. 

RCC-Mayo Clinic, 


Laurence Henson, BS

Laurence Henson is a 4th year medical student at the UCSF School of Medicine. He started his undergraduate education at the University of the Philippines, Diliman before immigrating to the United States where he graduated with a BS in Physiology at San Francisco State University. At the start of his medical education, he was highly involved with Mabuhay Health Clinic, a center that provided free primary care to Filipino patients in the SF Bay Area. Wanting to reconnect with his people and home country, he became invested in global health efforts to establish long-term health solutions to health centers and clinic among low-to-middle-income countries.


He is currently working with Rayos Contra Cancer to pilot a head and neck contouring curriculum in the Philippines. In his free time, Laurence enjoys cooking, baking, and jogging at Lake Merced.

RCC-UCSF Chapter,
San Francisco

Keara English, BS

Keara English is a 4th year medical student at Albert Einstein College of Medicine in Bronx, NY. She matched at the Memorial Sloan Kettering Cancer Center for her internship and Johns Hopkins for radiation oncology. She has had an interest in global health and healthcare disparities since college and this interest has grown and developed while in medical school.


She strongly believes that healthcare is a human right and that everyone should have access to the same quality healthcare resources. In medical school, she participated in 3 different global health initiatives to India, Uganda, and Rwanda. She is very excited to start a career in radiation oncology and continue the efforts to bring oncologic services to low and middle income communities around the world. 

RCC-Albert Einstein Chapter,
New York

Richel Baclay, MD

Richel Baclay is a board-certified radiation oncologist from the Philippines, and is currently a Research Fellow at the Stanford University Department of Radiation Oncology.


She graduated from the University of the Philippines College of Medicine,  and completed residency at St Luke’s Medical Center. Before residency, she worked in health policy at the Philippine Health Insurance Corporation,  and wrote the national health insurance policy for primary care benefits. After that, she became the country project coordinator for The Global Fund to fight AIDS/HIV, managing millions of dollars for nationwide HIV/AIDS programs. Southeast Asian countries, including the Philippines, still have a lot to learn with advanced technologies like IMRT, SRS, and SBRT. She wants to provide opportunities for the doctors back home to learn from experts here in the US, thus is piloting the Head and Neck contouring curriculum project.

RCC-Stanford University,

RCC ProKnow Cloud Team

Emily MacDuffie, BS

Emily is a resident physician who is driven to find innovative solutions to healthcare access and treatment in low resource regions around the world. Throughout her studies at Swarthmore College and the Warren Alpert Medical School of Brown University, she spent significant time conducting oncology research in Botswana and Rwanda as well as supporting educational health programs in refugee communities in Rhode Island. She is currently at the University of Pennsylvania for her internship year and radiation oncology residency.


She is a member of ASTRO, ASCO, ABS, and the Society for Palliative Radiation Oncology and is currently supporting the efforts of the Latin American Cooperative Study 1 (LACOS-1). She joined Rayos Contra Cancer with the belief that strong personal networks across the globe are at the heart of improving care and is excited to help RCC grow through connection and education.

RCC-Brown Chapter,

Thomas Perez, BS

Thomas Perez is a Vanderbilt medical student with a B.S. in Biology and Computational Science. He is a graduate of the University of California Santa Barbara and has years of industry experiencing working in Silicon Valley before medical school. He hopes to lead new development efforts in Latin America that will improve access to the highest quality cancer care.

He facilitates the coordination of Latin American Cooperative Study 1 (LACOS-1). He specializes in RCC ProKnow support, clinic set up, management, and research instruction.

RCC-Vanderbilt Chapter,

Becky Lee, MD MPH

Becky is a resident in radiation oncology at Loma Linda University. She attended medical school at the University of California, Los Angeles, where she first started thinking critically about global health while assessing behavioral risk factors within the HIV-positive and at-risk populations in Hanoi, Vietnam.


She completed her Master of Public Health degree at Harvard with a concentration in Global Health, where her practicum revolved around studying the expansion plan of the Children's Cancer Hospital Egypt and the construction of their proton therapy center. Becky hopes to use her training to identify and address obstacles that populations face globally in seeking cancer care for all.

RCC-Loma Linda,
Los Angeles

Agnes Ewongwo, MD MPH

Agnes (Aggie) Ewongwo graduated with an MD/MPH from the University of Arizona College of Medicine-Phoenix. 


Aggie was born and raised in Cameroon and later relocated to the United States. Aggie is committed to improving access to quality and affordable oncology services in Sub-Saharan Africa. She plans to join the efforts focused on expanding access to radiotherapy and brachytherapy for the management of prevalent cancers in Africa. Her passions also extend into public advocacy, mentorship, and addressing health inequities in local as well as internal communities.

Aggie is an incoming radiation oncology resident at Stanford University Radiation Oncology program.

RCC-University of Arizona,

RCC Social Media

Nupur Sridhar, BA

Nupur Shridhar is a 1st year medical student at the Albert Einstein College of Medicine. She has a BA in English and a BA in Biology from Brown University. She also founded and directed a K-12 engineering lab prior to starting medical school.


Her interest in global health is driven by her personal and professional experiences, including as a data analyst and community organizer. She currently oversees and generates social media for RCC.

RCC-Albert Einstein Chapter,
New York